public IEnumerable <TNode> Search(TNode initialNode)
{
SearchInit();
var closedNodes = new HashSet <TState>();
var fringeStack = new Stack <TNode>();
fringeStack.Push(initialNode);
while (fringeStack.Any())
{
var currentNode = fringeStack.Pop();
if (Mode == SearchMode.GraphSearch)
{
if (closedNodes.Contains(currentNode.State))
{
continue;
}
else
{
closedNodes.Add(currentNode.State);
}
}
UpdateMaxDepth(currentNode);
if (currentNode.IsGoalState())
{
yield return(currentNode);
}
else
{
if (ExpandNodeDepthTest(currentNode))
{
ExpandedNodesStat++;
foreach (var successorNode in Expander.ExpandNode(currentNode))
{
fringeStack.Push(successorNode);
}
}
}
}
}
public IEnumerable <Node <State> > Search(Node <State> initialNode)
{
var closedNodes = new HashSet <State>();
var fringesQueue = new Queue <IEnumerable <Node <State> > >();
fringesQueue.Enqueue(new[] { initialNode });
while (fringesQueue.Any())
{
var currentFringe = fringesQueue.Dequeue();
foreach (var currentNode in currentFringe)
{
if (Mode == SearchMode.GraphSearch)
{
if (closedNodes.Contains(currentNode.State))
{
continue;
}
else
{
closedNodes.Add(currentNode.State);
}
}
MaxDepthStat = Math.Max(MaxDepthStat, currentNode.Depth);
if (currentNode.IsGoalState())
{
yield return(currentNode);
}
else
{
fringesQueue.Enqueue(Expander.ExpandNode(currentNode));
ExpandedNodesStat++;
}
}
}
}
public IEnumerable <AStarNode <State> > Search(AStarNode <State> initialNode)
{
var closedNodes = new HashSet <State>();
var fringesPriorityQueue = new Heap <AStarNode <State> >(new[] { initialNode });
while (fringesPriorityQueue.Any())
{
var currentNode = fringesPriorityQueue.ExtractMin();
if (Mode == SearchMode.GraphSearch)
{
if (closedNodes.Contains(currentNode.State))
{
continue;
}
else
{
closedNodes.Add(currentNode.State);
}
}
MaxDepthStat = Math.Max(MaxDepthStat, currentNode.Depth);
if (currentNode.IsGoalState())
{
yield return(currentNode);
}
else
{
foreach (var node in Expander.ExpandNode(currentNode))
{
fringesPriorityQueue.Add(node);
ExpandedNodesStat++;
}
}
}
}
